Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 8d597884c77fb78790b510f0eb4b0acd31a3a229bb1b9bec6191ebe1920661cb:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^