Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> bef93bd9f5420e5e3f39d9221e6e38ac2eadf11e6acb5e08b44a6bc6b37b0408:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^